CVE-2026-1849
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Out-of-Memory Vulnerability in MongoDB Server Expression Evaluation
Vulnerability report for CVE-2026-1849, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-02-10
Last updated on: 2026-02-25
Assigner: MongoDB, Inc.
Description
Description
MongoDB Server may experience an out-of-memory failure while evaluating expressions that produce deeply nested documents. The issue arises in recursive functions because the server does not periodically check the depth of the expression.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mongodb | mongodb | From 7.0.0 (inc) to 7.0.29 (exc) |
| mongodb | mongodb | From 8.0.0 (inc) to 8.0.18 (exc) |
| mongodb | mongodb | From 8.2.0 (inc) to 8.2.2 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-674 | The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. |
